I look forward to rereading this when I can get back to the office. It’ll be interesting to see if he’s exegeting Rom 5:13 this way or using it as an analogy. He does come out explicitly (but I can’t cite where right now) and affirm that the original adam (before Adam) are image-bearers. I’ll try to find the reference, b/c I’m sure I made a note in the margin.